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/*
* Copyright 2010-2015 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.descriptors.annotations
import org.jetbrains.kotlin.descriptors.PropertyDescriptor
import org.jetbrains.kotlin.resolve.AnnotationChecker
import org.jetbrains.kotlin.descriptors.annotations.AnnotationUseSiteTarget.*
import org.jetbrains.kotlin.name.FqName
import org.jetbrains.kotlin.psi.KtDeclaration
import org.jetbrains.kotlin.psi.KtProperty
import org.jetbrains.kotlin.resolve.BindingContext
import org.jetbrains.kotlin.storage.StorageManager
import org.jetbrains.kotlin.storage.getValue
/*
This class lazily splits Annotations into several different Annotations according to declaration site target priority on property.
Basically you pass an original Annotations and a list of targets applicable for your declaration.
Example: Annotations = [@property:P1, @field:F1, F2, P2, T],
F2, P2, T are annotations with declaration site targets 'field', 'property' and 'type', respectively.
Annotations will be split as:
FIELD -> [F1, F2], (even if F2 is applicable to PROPERTY because of target priority)
PROPERTY -> [P1, P2],
other -> [T].
*/
class AnnotationSplitter(
val storageManager: StorageManager,
allAnnotations: Annotations,
applicableTargetsLazy: () -> Set
) {
companion object {
private val TARGET_PRIORITIES = setOf(CONSTRUCTOR_PARAMETER, PROPERTY, FIELD)
@JvmStatic fun create(
storageManager: StorageManager,
annotations: Annotations,
targets: Set
): AnnotationSplitter {
return AnnotationSplitter(storageManager, annotations, { targets })
}
@JvmStatic fun getTargetSet(parameter: Boolean, context: BindingContext, wrapper: PropertyWrapper): Set {
val descriptor = wrapper.descriptor
assert(descriptor != null)
val hasBackingField = context[BindingContext.BACKING_FIELD_REQUIRED, descriptor] ?: false
val hasDelegate = wrapper.declaration is KtProperty && wrapper.declaration.hasDelegate()
return getTargetSet(parameter, descriptor!!.isVar, hasBackingField, hasDelegate)
}
@JvmStatic fun getTargetSet(
parameter: Boolean, isVar: Boolean, hasBackingField: Boolean, hasDelegate: Boolean
): Set = hashSetOf(PROPERTY, PROPERTY_GETTER).apply {
if (parameter) add(CONSTRUCTOR_PARAMETER)
if (hasBackingField) add(FIELD)
if (isVar) add(PROPERTY_SETTER)
if (hasDelegate) add(PROPERTY_DELEGATE_FIELD)
}
}
class PropertyWrapper @JvmOverloads constructor(val declaration: KtDeclaration, var descriptor: PropertyDescriptor? = null)
private val splitAnnotations = storageManager.createLazyValue {
val map = hashMapOf>()
val other = arrayListOf()
val applicableTargets = applicableTargetsLazy()
val applicableTargetsWithoutUseSiteTarget = applicableTargets.intersect(TARGET_PRIORITIES)
outer@ for (annotationWithTarget in allAnnotations.getAllAnnotations()) {
val useSiteTarget = annotationWithTarget.target
if (useSiteTarget != null) {
if (useSiteTarget in applicableTargets)
map.getOrPut(useSiteTarget, { arrayListOf() }).add(annotationWithTarget)
else
other.add(annotationWithTarget)
continue@outer
}
for (target in TARGET_PRIORITIES) {
if (target !in applicableTargetsWithoutUseSiteTarget) continue
val declarationSiteTargetForCurrentTarget = KotlinTarget.USE_SITE_MAPPING[target] ?: continue
val applicableTargetsForAnnotation = AnnotationChecker.applicableTargetSet(annotationWithTarget.annotation)
if (declarationSiteTargetForCurrentTarget in applicableTargetsForAnnotation) {
map.getOrPut(target, { arrayListOf() }).add(annotationWithTarget)
continue@outer
}
}
other.add(annotationWithTarget)
}
map to AnnotationsImpl.create(other)
}
fun getOtherAnnotations(): Annotations = LazySplitAnnotations(storageManager, null)
fun getAnnotationsForTarget(target: AnnotationUseSiteTarget): Annotations = LazySplitAnnotations(storageManager, target)
fun getAnnotationsForTargets(vararg targets: AnnotationUseSiteTarget): Annotations {
return CompositeAnnotations(targets.map { getAnnotationsForTarget(it) })
}
private inner class LazySplitAnnotations(storageManager: StorageManager, val target: AnnotationUseSiteTarget?) : Annotations {
private val annotations by storageManager.createLazyValue {
val splitAnnotations = [email protected]()
if (target != null)
AnnotationsImpl.create(splitAnnotations.first[target] ?: emptyList())
else
splitAnnotations.second
}
override fun isEmpty() = annotations.isEmpty()
override fun hasAnnotation(fqName: FqName) = annotations.hasAnnotation(fqName)
override fun findAnnotation(fqName: FqName) = annotations.findAnnotation(fqName)
override fun getUseSiteTargetedAnnotations() = annotations.getUseSiteTargetedAnnotations()
override fun getAllAnnotations() = annotations.getAllAnnotations()
override fun findExternalAnnotation(fqName: FqName) = annotations.findExternalAnnotation(fqName)
override fun iterator() = annotations.iterator()
override fun toString() = annotations.toString()
}
}
